// Copyright (c) 2021-2024 SigScalr, Inc.
//
// This file is part of SigLens Observability Solution
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package utils

func CalculateStandardVariance(values []float64) float64 {
	sum := 0.0
	length := float64(len(values))
	for _, val := range values {
		sum += val
	}
	avg := sum / length
	sumValSquare := 0.0
	for _, val := range values {
		sumValSquare += (val - avg) * (val - avg)
	}
	return sumValSquare / length
}
